Title: Assessing Fly Ash Beneficiation's Process Effect on Concrete Performance

Author(s): Rennan Medeiros and Leandro. F. M. Sanchez

Publication: Symposium Paper

Volume: 362

Issue:

Appears on pages(s): 432-443

Keywords: fly ash concrete, different fly ashes, hydration, mechanical properties, global warming potential

DOI: 10.14359/51740901

Date: 6/11/2024

Abstract:
Achieving low carbon emissions in the concrete industry necessitates a multifaceted approach, which includes maximizing the efficacy of supplementary cementitious materials (SCMs). In this respect, this paper investigates fly ash-concrete made of fly ash from distinct burning technology, benefited by different pieces of equipment. Several aspects of fly ash-concrete performance were assessed, including hydration, mechanical properties, and eco-efficiency. The results showed that the burning technology plays an important role in fly ash reactivity. Although both approaches to mechanically activating fly ashes provide interesting results, there is an intriguing difference in the performance of the fly ash concrete. Furthermore, the lifecycle analysis underscores the potential for considerable reduction in global warming potential through the incorporation of fly ash in concrete, making it a promising avenue for reducing the industry's environmental footprint. These findings offer valuable insights for optimizing fly ash utilization and advancing the sustainability of the concrete sector.